Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10
The AirTAC Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 is a genuine double-acting ISO 15552 profile-barrel air cylinder with a Ø125mm bore and 165mm stroke, G1/2 air ports and adjustable end cushioning. Its standardized mounting interface makes it a drop-in replacement for other ISO 15552 cylinders in automation lines.
- BoreØ125 mm
- Stroke165 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2
- CushionAdjustable, 40 mm
About the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10
The AirTAC SAIJ125X165-10 is a double-acting ISO 15552 profile cylinder equipped with a rear stroke adjuster, delivering 6136N of push force at 0.5MPa. It features a SUS420J2 stainless steel rod and PT tapered ports. The integrated adjuster allows you to fine-tune the effective travel down by 10mm, creating a precise 155-165mm usable window for exact end-position tuning without swapping the cylinder.
This adjustable-stroke design is ideal for product changeovers, allowing you to dial in the retract stop at commissioning rather than adding external stops. The extruded aluminum barrel includes sensor grooves on both sides for flexible switch mounting. The rear screw acts purely as a travel stop and does not hold the load without live air pressure.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 Technical Specifications
| Model | Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 |
|---|---|
| Series | SAI ISO 15552 profile cylinder |
| Bore size | Ø125 mm |
| Stroke | 165 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max stroke | Up to 1500 mm |
Specifications follow the official AirTAC SAI series datasheet and ISO 15552 dimensions. Confirm against the product label before installation. Port options: G (BSPP) / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
Actual usable force is lower than theoretical due to friction and back-pressure. Size with a safety margin.
Model Code: Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10
| SAI | ISO 15552 profile-barrel cylinder series. |
|---|---|
| 125 | Bore size in mm. |
| ×165 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Related SAI-family variants: SAID (double rod), SAIJ (adjustable stroke), SAIL (with lock), SAIF (with valve), BSAI (enclasp / clamp-lock), and SAI-S with built-in magnet. Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B); seals: TPU (blank) / Viton H / NBR N.
Where the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 Is Used
Heavy Clamping
Delivers 6136N of clamping force at 0.5MPa with a 10mm retract adjustment to perfectly seat large parts without over-stroking.
Setup Calibration
Fine-tune the 155-165mm travel window during machine commissioning to dial in exact end positions for new tooling.
Product Changeover
Quickly adjust the rear stopper by up to 10mm to accommodate slight variations in product sizes on the production line.
Is the Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 the Right Cylinder?
Choose this 125mm bore when you need heavy thrust (6136N push at 0.5MPa) that exceeds the 3927N push of a 100mm cylinder, but do not require the massive 10053N output of a 160mm bore. The 10mm adjustment window is perfect for applications needing minor end-position corrections during setup. For fixed travel without the adjuster screw, a standard SAI cylinder is sufficient.
When replacing an ISO 15552 cylinder, match the 125mm bore, 165mm stroke, PT port thread, and mounting style. SAIJ supports a reduced mounting set: Basic, FA, LB, TC, FTC, TCM1, and TCM2 (omitting FB, CA, CB, CR). Because the stroke is 165mm, ensure external guides support any heavy side loads. For load-holding without live air, select a SAIL or BSAI cylinder instead.
Quick checklist
- ✓ Required force at your working pressure
- ✓ Stroke and mounting space
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
- ✓ Side load — consider a guided cylinder
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Avoid side load on the piston rod.
- check Adjust end cushion screws for smooth stops.
- check Use correct mounting accessory (FA/FB/CA/CB/LB/TC).
- check Installation by qualified personnel per AirTAC docs.
Airtac SAIJ125 Adjustable Cylinder SAIJ125AX165-10 FAQ
At 0.5MPa operating pressure, this 125mm bore cylinder provides 6136N of push force and 5734N of pull force. At 0.7MPa, the push force increases to 8590N.
The rear adjuster screw allows you to shorten the nominal 165mm stroke by up to 10mm, providing a usable travel window of 155-165mm. This stopper only sets the end position and does not lock the load without air pressure.
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